Portion of a display panel with a graphical user interface



FIG. 1 is a front view of a portion of a display panel with a graphical user interface showing a first embodiment or our new design; and,

FIG. 2 is a front view of a portion of a display panel with a graphical user interface showing a second embodiment of our new design.

The broken lines showing of a portion of a display panel of a communications terminal and portions of the graphical user interface are included for the purpose of illustrating environmental structure and form no part of the claimed design. The stippling is used to show relative degrees of shading throughout the interface. 

CLAIM The ornamental design for a portion of a display panel with a graphical user interface, as shown and described. 